JP6764112B2 - 電池保護装置 - Google Patents
電池保護装置 Download PDFInfo
- Publication number
- JP6764112B2 JP6764112B2 JP2016158801A JP2016158801A JP6764112B2 JP 6764112 B2 JP6764112 B2 JP 6764112B2 JP 2016158801 A JP2016158801 A JP 2016158801A JP 2016158801 A JP2016158801 A JP 2016158801A JP 6764112 B2 JP6764112 B2 JP 6764112B2
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- terminal
- charge
- discharge control
- chip
- protection device
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
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Description
前記二次電池(220)に接続される充電制御FET(124)と放電制御FET(123)とを含む充放電制御チップ(120)と、
前記二次電池(220)の両端電圧に基づき前記充電制御FET(124)と前記放電制御FET(123)とを制御して前記二次電池(220)の過充電、過放電及び過電流を防ぐ保護チップ(130)と、
複数の外部端子の接続面(114)と、前記接続面(114)と導通した他方の面(113)と、を有するリードフレーム(110)と、を備え、
前記リードフレーム(110)の前記他方の面(113)と、前記充放電制御チップ(120)の表面(121)に形成された前記充電制御FET(124)及び前記放電制御FET(123)の端子とが、導電材(111)を介して電気的に接続され、
前記充放電制御チップ(120)の裏面(122)に、前記保護チップ(130)が該保護チップ(130)の裏面(132)が向かい合うように絶縁性部材を介して実装され、
前記保護チップ(130)の端子(T1〜T6)と前記リードフレーム(110)の前記他方の面(113)とが、ボンディングワイヤ(140)により電気的に接続され、
前記充放電制御チップ(120)と前記保護チップ(130)とが樹脂(150)で覆われており、
前記複数の外部端子のうち、前記二次電池の負極端子と接続される外部端子と、負荷又は電力供給源の負極端子と接続される外部端子とが、前記電池保護装置において前記複数の外部端子が露出した外部端子面の中心点に対して、点対称に配置される、ことを特徴とする。
101 外部端子面
110 リードフレーム
111 導電材
112 絶縁性接着材
113 塗布面
114 接続面
120 充放電制御用チップ
121、131 表面
122、132 裏面
130 保護用チップ
140 ボンディングワイヤ
150 樹脂
Claims (5)
- 二次電池における過充電、過放電及び過電流を防止するための1パッケージ化された電池保護装置であって、
前記二次電池に接続される充電制御FETと放電制御FETとを含む充放電制御チップと、
前記二次電池の両端電圧に基づき前記充電制御FETと前記放電制御FETとを制御して前記二次電池の過充電、過放電及び過電流を防ぐ保護チップと、
複数の外部端子の接続面と、前記接続面と導通した他方の面と、を有するリードフレームと、を備え、
前記リードフレームの前記他方の面と、前記充放電制御チップの表面に形成された前記充電制御FET及び前記放電制御FETの端子とが、導電材を介して電気的に接続され、
前記充放電制御チップの裏面に、前記保護チップが該保護チップの裏面が向かい合うように絶縁性部材を介して実装され、
前記保護チップの端子と前記リードフレームの前記他方の面とが、ボンディングワイヤにより電気的に接続され、
前記充放電制御チップと前記保護チップとが樹脂で覆われており、
前記複数の外部端子のうち、前記二次電池の負極端子と接続される外部端子と、負荷又は電力供給源の負極端子と接続される外部端子とが、前記電池保護装置において前記複数の外部端子が露出した外部端子面の中心点に対して、点対称に配置される、ことを特徴とする電池保護装置。 - 前記充電制御FETと前記放電制御FETは、前記充放電制御チップ内でドレインが共通接続されていることを特徴とする請求項1記載の電池保護装置。
- 前記複数の外部端子のレイアウトは、前記電池保護装置において前記複数の外部端子が露出した外部端子面の中心点に対して、点対称であることを特徴する請求項2記載の電池保護装置。
- 前記保護チップの端子と、前記充放電制御チップの端子は、各々独立していることを特徴とする請求項1乃至3の何れか一項に記載の電池保護装置。
- 前記複数の外部端子のうち、前記保護チップの充電制御端子と接続される外部端子と、前記充電制御FETのゲート端子と接続される外部端子と、は隣接して配置され、
前記複数の外部端子のうち、前記保護チップの放電制御端子と接続される外部端子と、前記放電制御FETのゲート端子と接続される外部端子と、は隣接して配置されることを特徴とする請求項1乃至4の何れか一項に記載の電池保護装置。
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KR1020170068980A KR102361291B1 (ko) | 2016-08-12 | 2017-06-02 | 전지 보호 장치 |
US15/622,272 US10170919B2 (en) | 2016-08-12 | 2017-06-14 | Battery protecting apparatus |
TW106126379A TWI770043B (zh) | 2016-08-12 | 2017-08-04 | 電池保護裝置 |
CN201710686255.1A CN107732329B (zh) | 2016-08-12 | 2017-08-11 | 电池保护装置 |
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USD1013634S1 (en) | 2019-09-05 | 2024-02-06 | Techtronic Cordless Gp | Battery pack |
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USD929334S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
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